They will lay eggs in fresh water but the eggs won't hatch. One of my winter projects is to breed nerites. If the eggs are placed into brackish water immediately after being laid there is a chance they will hatch!

They will lay eggs in fresh water but the eggs won't hatch. One of my winter projects is to breed nerites. If the eggs are placed into brackish water immediately after being laid there is a chance they will hatch!

I never knew that, thanks for answering!! Too bad there aren't any here, even in my LFS. :(
Sareena, I'm not quite sure on runaway snails. I heard they get out if the water quality is bad, though.